2016 safety belt usage survey in Kentucky.
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Summary
This report presents the findings of the 2016 statewide observational survey of safety belt usage in Kentucky, conducted by the Kentucky Transportation Center. The study aims to establish the current statewide usage rate to evaluate the effectiveness of primary enforcement laws, which replaced secondary enforcement in 2006, and to compare trends against historical data dating back to 1982. The survey also collected data on child safety seat usage, bicycle helmet use, and motorcycle helmet use to provide a comprehensive view of occupant protection compliance. The methodology involved direct observation at 150 data collection sites across 15 selected counties. Counties were chosen to ensure geographic representation, with Jefferson and Fayette Counties automatically included due to their high vehicle miles traveled (VMT), while other counties were randomly selected from highway districts. Sites were stratified by road type—limited access, arterials, and local roads—with the number of sites per county proportional to VMT. Data collectors observed drivers and front-seat passengers for one hour per site between June and July 2016, recording belt usage status. Usage rates were calculated using a four-step weighting process based on VMT to estimate statewide proportions, with standard errors calculated via a jackknife approach. The total sample size for front-seat occupants was approximately 75,907. The 2016 statewide safety belt usage rate for all front-seat occupants was 86.5%, with a 95% confidence interval of 85.8% to 87.2%. This rate was statistically similar to the 2015 rate but represented the highest usage since surveys began in 1982, when usage was only 4%. Usage varied significantly by road class, ranging from 92.4% on limited-access highways to 79.9% on local roads. Vehicle type also influenced compliance; SUVs had the highest usage rate (89.4%), while pickup trucks had the lowest (78.7%). County-level rates ranged from a high of 90.2% in Jefferson and Kenton Counties to a low of 68.6% in Clay County. Additionally, the survey found that motorcycle helmet usage was 59% in 2016, down from over 95% prior to the repeal of mandatory helmet laws in 1998, while bicycle helmet usage remained very low at 11%. The authors conclude that while safety belt usage has increased dramatically over three decades due to legislation and enforcement, the rate of increase has slowed as it approaches 90%. They recommend maintaining current education and enforcement efforts and suggest modifying the driver point system to include points for failure to wear a safety belt, as well as increasing fines for violations. The data indicate that targeted enforcement in counties and vehicle categories with lower compliance, such as pickup trucks on local roads, could further improve safety outcomes.
Key finding
The statewide safety belt usage rate for all front-seat occupants in Kentucky was 86.5 percent in 2016, with pickup trucks showing the lowest usage at 78.7 percent and SUVs the highest at 89.4 percent.
Methodology
survey
Sample size: 75907
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_rosap on 2026-05-23 (6 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 2 | 2026-05-23 |
| archive | success | — | — | — | 1 | 2026-05-23 |
| extract | success | cached | — | — | 2 | 2026-06-10 |
| clean | success | — | — | — | 1 | 2026-06-01 |
| chunk | success | — | — | — | 1 | 2026-06-01 |
| embed | success | — | — | — | 1 | 2026-06-02 |
| enrich | success | — | — | — | 1 | 2026-05-23 |
| promote | success | — | — | — | 1 | 2026-05-23 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 3 | 2026-06-10 |
| tag | success | vector_similarity | — | — | 24 | 2026-06-11 |
| verify | success | — | — | — | 2 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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- Empirical Findings: observational prevalence, crash risk outcomes